ad5671acb66acf5c762c4e3bdd57ef4300a97db5
[linux-2.6.git] / arch / arm / mach-realview / realview_pb1176.c
1 /*
2  *  linux/arch/arm/mach-realview/realview_pb1176.c
3  *
4  *  Copyright (C) 2008 ARM Limited
5  *  Copyright (C) 2000 Deep Blue Solutions Ltd
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20  */
21
22 #include <linux/init.h>
23 #include <linux/platform_device.h>
24 #include <linux/sysdev.h>
25 #include <linux/amba/bus.h>
26 #include <linux/amba/pl061.h>
27 #include <linux/amba/mmci.h>
28 #include <linux/amba/pl022.h>
29 #include <linux/io.h>
30
31 #include <mach/hardware.h>
32 #include <asm/irq.h>
33 #include <asm/leds.h>
34 #include <asm/mach-types.h>
35 #include <asm/pmu.h>
36 #include <asm/pgtable.h>
37 #include <asm/hardware/gic.h>
38 #include <asm/hardware/cache-l2x0.h>
39
40 #include <asm/mach/arch.h>
41 #include <asm/mach/flash.h>
42 #include <asm/mach/map.h>
43 #include <asm/mach/time.h>
44
45 #include <mach/board-pb1176.h>
46 #include <mach/irqs.h>
47
48 #include "core.h"
49
50 static struct map_desc realview_pb1176_io_desc[] __initdata = {
51         {
52                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
53                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
54                 .length         = SZ_4K,
55                 .type           = MT_DEVICE,
56         }, {
57                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_CPU_BASE),
58                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
59                 .length         = SZ_4K,
60                 .type           = MT_DEVICE,
61         }, {
62                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
63                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
64                 .length         = SZ_4K,
65                 .type           = MT_DEVICE,
66         }, {
67                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
68                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
69                 .length         = SZ_4K,
70                 .type           = MT_DEVICE,
71         }, {
72                 .virtual        = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
73                 .pfn            = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
74                 .length         = SZ_4K,
75                 .type           = MT_DEVICE,
76         }, {
77                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
78                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
79                 .length         = SZ_4K,
80                 .type           = MT_DEVICE,
81         }, {
82                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
83                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
84                 .length         = SZ_4K,
85                 .type           = MT_DEVICE,
86         }, {
87                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
88                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
89                 .length         = SZ_4K,
90                 .type           = MT_DEVICE,
91         }, {
92                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
93                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
94                 .length         = SZ_8K,
95                 .type           = MT_DEVICE,
96         },
97 #ifdef CONFIG_DEBUG_LL
98         {
99                 .virtual        = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
100                 .pfn            = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
101                 .length         = SZ_4K,
102                 .type           = MT_DEVICE,
103         },
104 #endif
105 };
106
107 static void __init realview_pb1176_map_io(void)
108 {
109         iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
110 }
111
112 static struct pl061_platform_data gpio0_plat_data = {
113         .gpio_base      = 0,
114         .irq_base       = -1,
115 };
116
117 static struct pl061_platform_data gpio1_plat_data = {
118         .gpio_base      = 8,
119         .irq_base       = -1,
120 };
121
122 static struct pl061_platform_data gpio2_plat_data = {
123         .gpio_base      = 16,
124         .irq_base       = -1,
125 };
126
127 static struct pl022_ssp_controller ssp0_plat_data = {
128         .bus_id = 0,
129         .enable_dma = 0,
130         .num_chipselect = 1,
131 };
132
133 /*
134  * RealView PB1176 AMBA devices
135  */
136 #define GPIO2_IRQ       { IRQ_PB1176_GPIO2, NO_IRQ }
137 #define GPIO3_IRQ       { IRQ_PB1176_GPIO3, NO_IRQ }
138 #define AACI_IRQ        { IRQ_PB1176_AACI, NO_IRQ }
139 #define MMCI0_IRQ       { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
140 #define KMI0_IRQ        { IRQ_PB1176_KMI0, NO_IRQ }
141 #define KMI1_IRQ        { IRQ_PB1176_KMI1, NO_IRQ }
142 #define PB1176_SMC_IRQ  { NO_IRQ, NO_IRQ }
143 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
144 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
145 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
146 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG, NO_IRQ }
147 #define PB1176_GPIO0_IRQ        { IRQ_PB1176_GPIO0, NO_IRQ }
148 #define GPIO1_IRQ       { IRQ_PB1176_GPIO1, NO_IRQ }
149 #define PB1176_RTC_IRQ  { IRQ_DC1176_RTC, NO_IRQ }
150 #define SCI_IRQ         { IRQ_PB1176_SCI, NO_IRQ }
151 #define PB1176_UART0_IRQ        { IRQ_DC1176_UART0, NO_IRQ }
152 #define PB1176_UART1_IRQ        { IRQ_DC1176_UART1, NO_IRQ }
153 #define PB1176_UART2_IRQ        { IRQ_DC1176_UART2, NO_IRQ }
154 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3, NO_IRQ }
155 #define PB1176_UART4_IRQ        { IRQ_PB1176_UART4, NO_IRQ }
156 #define PB1176_SSP_IRQ          { IRQ_DC1176_SSP, NO_IRQ }
157
158 /* FPGA Primecells */
159 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
160 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
161 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
162 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
163 AMBA_DEVICE(uart4,      "fpga:uart4",   PB1176_UART4,   NULL);
164
165 /* DevChip Primecells */
166 AMBA_DEVICE(smc,        "dev:smc",      PB1176_SMC,     NULL);
167 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
168 AMBA_DEVICE(wdog,       "dev:wdog",     PB1176_WATCHDOG,        NULL);
169 AMBA_DEVICE(gpio0,      "dev:gpio0",    PB1176_GPIO0,   &gpio0_plat_data);
170 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
171 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
172 AMBA_DEVICE(rtc,        "dev:rtc",      PB1176_RTC,     NULL);
173 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
174 AMBA_DEVICE(uart0,      "dev:uart0",    PB1176_UART0,   NULL);
175 AMBA_DEVICE(uart1,      "dev:uart1",    PB1176_UART1,   NULL);
176 AMBA_DEVICE(uart2,      "dev:uart2",    PB1176_UART2,   NULL);
177 AMBA_DEVICE(uart3,      "dev:uart3",    PB1176_UART3,   NULL);
178 AMBA_DEVICE(ssp0,       "dev:ssp0",     PB1176_SSP,     &ssp0_plat_data);
179 AMBA_DEVICE(clcd,       "dev:clcd",     PB1176_CLCD,    &clcd_plat_data);
180
181 static struct amba_device *amba_devs[] __initdata = {
182         &uart0_device,
183         &uart1_device,
184         &uart2_device,
185         &uart3_device,
186         &uart4_device,
187         &smc_device,
188         &clcd_device,
189         &sctl_device,
190         &wdog_device,
191         &gpio0_device,
192         &gpio1_device,
193         &gpio2_device,
194         &rtc_device,
195         &sci0_device,
196         &ssp0_device,
197         &aaci_device,
198         &mmc0_device,
199         &kmi0_device,
200         &kmi1_device,
201 };
202
203 /*
204  * RealView PB1176 platform devices
205  */
206 static struct resource realview_pb1176_flash_resources[] = {
207         [0] = {
208                 .start          = REALVIEW_PB1176_FLASH_BASE,
209                 .end            = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
210                 .flags          = IORESOURCE_MEM,
211         },
212         [1] = {
213                 .start          = REALVIEW_PB1176_SEC_FLASH_BASE,
214                 .end            = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
215                 .flags          = IORESOURCE_MEM,
216         },
217 };
218 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
219 #define PB1176_FLASH_BLOCKS     2
220 #else
221 #define PB1176_FLASH_BLOCKS     1
222 #endif
223
224 static struct resource realview_pb1176_smsc911x_resources[] = {
225         [0] = {
226                 .start          = REALVIEW_PB1176_ETH_BASE,
227                 .end            = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
228                 .flags          = IORESOURCE_MEM,
229         },
230         [1] = {
231                 .start          = IRQ_PB1176_ETH,
232                 .end            = IRQ_PB1176_ETH,
233                 .flags          = IORESOURCE_IRQ,
234         },
235 };
236
237 static struct resource realview_pb1176_isp1761_resources[] = {
238         [0] = {
239                 .start          = REALVIEW_PB1176_USB_BASE,
240                 .end            = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
241                 .flags          = IORESOURCE_MEM,
242         },
243         [1] = {
244                 .start          = IRQ_PB1176_USB,
245                 .end            = IRQ_PB1176_USB,
246                 .flags          = IORESOURCE_IRQ,
247         },
248 };
249
250 static struct resource pmu_resource = {
251         .start          = IRQ_DC1176_CORE_PMU,
252         .end            = IRQ_DC1176_CORE_PMU,
253         .flags          = IORESOURCE_IRQ,
254 };
255
256 static struct platform_device pmu_device = {
257         .name                   = "arm-pmu",
258         .id                     = ARM_PMU_DEVICE_CPU,
259         .num_resources          = 1,
260         .resource               = &pmu_resource,
261 };
262
263 static struct resource char_lcd_resources[] = {
264         {
265                 .start = REALVIEW_CHAR_LCD_BASE,
266                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
267                 .flags = IORESOURCE_MEM,
268         },
269         {
270                 .start  = IRQ_PB1176_CHARLCD,
271                 .end    = IRQ_PB1176_CHARLCD,
272                 .flags  = IORESOURCE_IRQ,
273         },
274 };
275
276 static struct platform_device char_lcd_device = {
277         .name           =       "arm-charlcd",
278         .id             =       -1,
279         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
280         .resource       =       char_lcd_resources,
281 };
282
283 static void __init gic_init_irq(void)
284 {
285         /* ARM1176 DevChip GIC, primary */
286         gic_init(0, IRQ_DC1176_GIC_START,
287                  __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
288                  __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
289
290         /* board GIC, secondary */
291         gic_init(1, IRQ_PB1176_GIC_START,
292                  __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
293                  __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
294         gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
295 }
296
297 static void __init realview_pb1176_timer_init(void)
298 {
299         timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
300         timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
301         timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
302         timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
303
304         realview_timer_init(IRQ_DC1176_TIMER0);
305 }
306
307 static struct sys_timer realview_pb1176_timer = {
308         .init           = realview_pb1176_timer_init,
309 };
310
311 static void realview_pb1176_reset(char mode)
312 {
313         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
314         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
315         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
316         __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
317 }
318
319 static void realview_pb1176_fixup(struct machine_desc *mdesc,
320                                   struct tag *tags, char **from,
321                                   struct meminfo *meminfo)
322 {
323         /*
324          * RealView PB1176 only has 128MB of RAM mapped at 0.
325          */
326         meminfo->bank[0].start = 0;
327         meminfo->bank[0].size = SZ_128M;
328         meminfo->nr_banks = 1;
329 }
330
331 static void __init realview_pb1176_init(void)
332 {
333         int i;
334
335 #ifdef CONFIG_CACHE_L2X0
336         /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
337         l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
338 #endif
339
340         realview_flash_register(realview_pb1176_flash_resources,
341                                 PB1176_FLASH_BLOCKS);
342         realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
343         platform_device_register(&realview_i2c_device);
344         realview_usb_register(realview_pb1176_isp1761_resources);
345         platform_device_register(&pmu_device);
346         platform_device_register(&char_lcd_device);
347
348         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
349                 struct amba_device *d = amba_devs[i];
350                 amba_device_register(d, &iomem_resource);
351         }
352
353 #ifdef CONFIG_LEDS
354         leds_event = realview_leds_event;
355 #endif
356         realview_reset = realview_pb1176_reset;
357 }
358
359 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
360         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
361         .boot_params    = PLAT_PHYS_OFFSET + 0x00000100,
362         .fixup          = realview_pb1176_fixup,
363         .map_io         = realview_pb1176_map_io,
364         .init_early     = realview_init_early,
365         .init_irq       = gic_init_irq,
366         .timer          = &realview_pb1176_timer,
367         .init_machine   = realview_pb1176_init,
368 #ifdef CONFIG_ZONE_DMA
369         .dma_zone_size  = SZ_256M,
370 #endif
371 MACHINE_END